Before configuring auto-QoS, you should be aware of this information:
In releases earlier than Cisco IOS Release 12.2(20)SE, auto-QoS configures VoIP only on switch ports with Cisco IP Phones.
In Cisco IOS Release 12.2(20)SE or later, auto-QoS configures the switch for VoIP with Cisco IP Phones on nonrouted and routed ports. Auto-QoS also configures the switch for VoIP with devices running the Cisco SoftPhone application.
You can either trust or not enable mls qos at all. If MLS QoS is not enable the switch will not touch the DSCP, so there is really nothing to do if all you want the switch to do is not alter the incoming DSCP untouched.
Yes - I don't want the switch to alter the DSCP values - as the PBX and IP phones will set them the way I want. But I do want to supply some form of QOS for the VoIP packets traversing the switch - just in case the uplinks get congested the voice packets will get better queueing.
So I think I'll go ahead and apply both commands to the routed ports. - Thanks
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...